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Recognition of Words PHONETIC –Decoding sounds that letters or groups of letters make –“sound reading” WHOLE-WORD –Decoding word as a whole – needed in languages where there are irregular words (such as English) –“sight reading”

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Prespeech At one month, crying leads to other sounds At six months, sounds similar to speech begin to occur Early communication –Rejection –Request –Comment Protowords – strings of phonemes used by infants

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Early Speech Words come from nonspeech sounds First words around one year of age Two word combinations around 18-20 months

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ADULT GRAMMAR  Object words become noun phrases  Verbs are added next, along with some function words  Inflection – change in form of word (such as a suffix) to show grammatical change

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Acquisition of Meaning Pairings of objects with words repeatedly Overextension – the use of a word to denote a larger class of items than is appropriate –for example, calling anything furry a dog Underextension – use of a word to denote a smaller class of items than is appropriate –for example, only calling his pet a dog and not other dogs